JP3752283B2 - Press machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a press apparatus that can simultaneously perform the work of eliminating chamfering by crushing burrs while eliminating distortion (warpage) of a work punched by a press apparatus or the like.
[0002]
[Prior art]
In general, a plate material (hereinafter referred to as a workpiece) drilled by a press device is not only distorted and warped by the drilling process, but also forms burrs, so that a higher quality product can be obtained. Must be distorted, burr removed and chamfered. Therefore, conventionally, when trying to remove the distortion of the work, a distortion correcting machine is used, and when crushing by crushing the burr, a chamfering die is attached to the press device to perform deburring. If necessary, chamfering was performed with a drill. In addition, a burr protruding surface is polished using a polishing roll having elasticity, and a workpiece is deburred or chamfered using a polishing apparatus that performs chamfering.
[0003]
Thus, the conventional chamfering die is used by being mounted on a press device. For example, as shown in FIG. 7, the punch P is slightly larger than the inner shape of the work hole Wa of the workpiece W, and the elastic A punch holder H to which an upper plate 2 on which a work W to be machined and to be machined is urged by the body 1 is mounted, and a die having a flat surface with respect to the punch P The workpiece W is placed on the upper plate 2, and the die D is lowered and the workpiece W is pressed against the punch P to perform chamfering. In this chamfering type, it is possible to achieve a certain chamfering while crushing burrs, but it has been difficult to adjust the chamfering amount and to remove appropriate distortion. Chamfering deeper than the chamfering associated with It is was going to distortion up by straightening machine in the next step.
[0004]
Therefore, conventionally, in order to make the workpiece W drilled by a press device into a complete product, a chamfering die, a tool such as a drill, and a distortion correcting machine are separately required. Since it is performed in a separate process from the distortion removal by the strain straightening machine, not only equipment other than the press device is required, but there is a problem that the work for it increases and the processing cost increases.
[0005]
Therefore, a press machine has been developed that can perform distortion removal, deburring and chamfering around a hole that has been drilled by a press machine, etc. in a single operation, and the amount of chamfering can be adjusted. If so, it is considered extremely useful.
[0006]
[Problems to be solved by the invention]
In view of the prior art as described above, the present invention can perform deburring, chamfering, and distortion removal around a hole of a work that has been drilled by a press device or the like in a single operation, and It is an object of the present invention to provide a press device capable of adjusting the amount of chamfering.
[0007]
[Means for Solving the Problems]
The configuration of the press device of the present invention, which has been made for the purpose of solving the above-mentioned problems, is a punch having an outer shape slightly larger than the inner shape of the work to be machined and an elastic body that is normally biased to protrude from the punch. A punch holder for holding a workpiece mounting plate or a workpiece holding plate which is recessed from the surface of the punch when pressed, and an inner shape larger than the outer shape of the punch on the surface of the punch. And a die provided with a place.
[0008]
That is, the press device according to the present invention is provided with a notch larger than the outer shape of the punch on the surface of the die punch, so that if the die is operated toward the punch or the punch toward the die, At the same time as removing the burrs formed on the surface of the die and chamfering it, the periphery of the hole where the workpiece is processed enters the notch of the die, causing warpage opposite to warpage due to distortion, eliminating the distortion, and Can be corrected. The amount of chamfering can be adjusted by controlling the size of the notch provided in the die or the bottom dead center of the die.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of the main part of the press apparatus according to the present invention, FIG. 2 is a schematic view showing a state immediately before a work is distorted and deburred by the apparatus shown in FIG. FIG. 4 is a schematic diagram showing a state in which the operation is completed and the die is separated from the punch, and FIG. FIG. 6 and FIG. 6 are schematic views showing the size of the notch provided in the die when the chamfering of the work is reduced.
[0010]
In FIG. 1, the punch P, the elastic body 1, the upper plate 2, the punch holder H, and the die D on which the work is placed are the same as those of the conventional apparatus shown in FIG. Is provided with a notch 3 having an inner shape larger than the outer shape of the punch P on the surface of the die D with respect to the punch P. As the elastic body 1, a synthetic resin product such as urethane rubber or a spring is used.
[0011]
The operation of removing the strain C and the burrs B formed during the hole Wa drilling of the workpiece W by the press device of the present invention configured as described above is performed as follows. First, as shown in FIG. 2, the workpiece W is placed on the upper plate 2 (not shown) attached to the punch holder H, and then, as shown in FIG. When D is operated toward the punch P, the burrs B of the work W are abutted against the punch P and are removed by being crushed, and the chamfering F is also performed. If the distortion C is also removed by entering the notch 3 and the die D is moved up, the workpiece W becomes a deburred, chamfered and distorted product as shown in FIG.
[0012]
In the apparatus of the present invention, the chamfering amount of the work W can be adjusted by changing the size A of the inner shape of the notch 3 provided in the die D. That is, when the chamfering of the workpiece W is increased, the size A of the inner shape of the notch 3 is slightly larger than the outer shape of the punch P as shown in FIG. In this case, the outer shape of the punch P may be sufficiently larger as shown in FIG. The chamfering amount can also be adjusted by controlling the bottom dead center of the die D.
[0013]
In the above embodiment, the example in which the punch P is disposed below and the die D is disposed above has been described. However, the present invention is not limited to this, and the punch P is disposed above and the die D is disposed below. You may make it make it. In this case, it is assumed that the workpiece W is processed in the direction opposite to that shown in FIG.
[0014]
【The invention's effect】
The present invention is as described above, wherein the outer shape of the punch is made slightly larger than the hole shape of the work to be machined, and an inner shape notch larger than the outer shape of the punch is provided on the surface of the die with respect to the punch. -Since the plate on which the workpiece is placed is normally protruded from the surface of the punch and is recessed from the punch surface when the die is operated, the workpiece is placed on the plate. When the die is operated, deburring, chamfering, and distortion removal, which have conventionally been performed individually as described above, can be performed in a single operation.
[0015]
Further, in the turret punch press machine, the punch and die for drilling are mounted on the upper and lower turrets, the punch of the present invention is applied to the upper and lower turrets on the side where the workpiece burrs are generated, and the opposite side. By installing a die on the turret punch press once the work is set, drilling, deburring, chamfering, and distortion removal can be performed at once, greatly improving work efficiency. The processing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a press apparatus according to the present invention.
FIG. 2 is a schematic view showing a state just before performing work deburring, chamfering, and distortion removal work with the apparatus of FIG. 1;
FIG. 3 is a schematic view showing a state in which the operation is performed.
FIG. 4 is a schematic view showing a state in which the operation is completed and the die is separated from the punch.
FIG. 5 is a schematic view showing the size of a notch provided in a die when the chamfering of the workpiece is increased.
FIG. 6 is a schematic diagram showing the size of a notch provided in a die when the chamfering of the work is reduced.
FIG. 7 is a cross-sectional view of a main part of a conventional press device.
[Explanation of symbols]
P Punch D Die H Punch holder
1 Elastic body 2 Upper plate (for workpiece mounting)
3 Wake in the die W work
Wa Work hole B Burr C Distortion

Claims (1)

A punch having an outer shape slightly larger than the shape in the hole of the workpiece to be machined, and a workpiece mounting or workpiece which is urged by an elastic body and normally protrudes from the punch and is depressed from the surface of the punch when pressed. A press apparatus comprising: a punch holder for holding a clamp plate; and a die provided with a notch having an inner shape larger than the outer shape of the punch on a surface of the punch.

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